Color

#0a9fbd

#0a9fbd
hex#0a9fbd
rgbrgb(10, 159, 189)
hslhsl(190, 90%, 39%)
oklchoklch(0.649 0.115 217.8)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2853

Colors that go with #0a9fbd

Charcoal, Orange Red and Amber lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #0a9fbd

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#bd280a

#0abd81 · #0a46bd

#bd0a9f · #9fbd0a

Split-complementary

Open in tool →

#bd0a46 · #bd810a

#810abd · #bd280a · #46bd0a

Contrast

#0a9fbd as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #087e96 as the text (4.73:1)
  • AAA: use #065e6f as the text (7.4:1)
  • AA: or shift the background to #2b2b2b (4.52:1)
Aaon black
6.71:1passpassfail
  • AAA: use #0aa3c2 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a9fbd as the background.

Brands using this color

Fonts for this mood

#0a9fbd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a9fbd
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0a9fbd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a9fbd-a2b6be-df4e7c-1f252d-e9f1ef?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md